JCB Unveils “One Can” Solution For Tier 4 Final
JCB Power Systems today unveiled its Tier 4 final engine strategy at bauma 2013 in Munich. The Tier 4 final products will meet the emissions regulations with a compact selective catalytic reduction (SCR) system and build on the company’s existing JCB Ecomax Tier 4 interim technology.
JCB said it will recalibrate the Ecomax engine to achieve the reduced emissions requirement, resulting in a further 5% fuel saving over existing engines. An SCR solution with a urea-based additive will be used on engines above 55 kW, the company said.
A key feature , JCB said, is that the SCR system will be incorporated into a single exhaust muffler, in many cases replacing the existing exhaust and providing a “one can” solution, delivering the same compact overall dimensions for machine designers.
JCB said other significant benefits of the Tier 4 final technology include easy installation into existing machinery and the ability for JCB dealers to “de-tier” the engine for the used equipment market.
In its engine development program, JCB said it always focussed on minimizing exhaust emissions within the engine rather than relying on extensive aftertreatment systems to clean up the exhaust gases.
The SCR system will use just a 2 to 3% ratio of exhaust additive to fuel, as the engine is already providing clean exhaust gases, the company said. JCB has engineered a space-efficient mixing system for the SCR that the company said offers a reduced exhaust flow distance between the engine and the catalyst.